Apparatus for painting lines



Oct. 11, 1932. WEBER APPARAjIUS FOR PAINTING LINES Filed Nov. 22, 1950 Patented Oct. 11, 1932 UNITED STA ieueusr WEBER, or COSWIG, GERMANY ArrARATUs non PAINTING LINES Application filed November 22, 1930, Serial No. 497,484, and in Germany October 21, 1929.

This invention relates to an apparatus for painting lines. The drawing of a long line of uniform width throughout and with sharply defined edges is, as is known, ren- 5 dered more difiicult by the fact, that the hairs of the brush can deflect laterally during the drawing of the line. .Once the brush has beenv removed, it is difiicult to again accurately apply the brush at the point, at which 10 the line stopped, owing to the spreading of the hairs of the brush. V

Inorder to Overcome this objection, apparatus for painting lines have been proposed, the brush of which is limited by laterally fixed guide plates. These known line painting apparatus however impede the drawing of the line, owing to the fact that the guide plates remain stationary during the drawing of the line and merely slide on the surface to be painted, they prevent the brush from bending sufficiently so that the supplyof color from the brush to the surface can only be effected in an imperfect manner by the end portions of the bristles.

In order to avoid this, the lateral guide plates according-to the invention are oscillatably fastened on a spring controlled slide, which can be displaced during the drawing of the line. The guide plates may be made 7.6 practically circular and in this instance-oscillate around their own axis at the same radius as that assumed by the brush during the drawing of the line, so that lateral spreadr ing of the hairs of the brush beyond these 0 plates is prevented by the hairs coming into contact with the inner surface of the'plates.

The brushes are made easily exchangeable and one or more frieze combs m can'easily 4 be arranged between same. These combs are intermediate plates which are inserted .between the hairs of the brush in order to subdivide the brush into sections. It is there fore possible with the apparatus in question to simultaneously draw several lines in difone narrow side. secured on the supporting plate e'in that their ferent widths in a single operation, thereby effecting a great saving of time.

Two embodiments of the invention are illustrated by way of-examplein the accompanying drawing in which: 7 t Fig. 1 shows the apparatus in front elevaion.

Fig. 2 is a side elevation of Fig. 1.

Fig. 3 shows a modified form of construction of the line drawing apparatus in sideelevation.

Fig.4 is a front elevation of Fig. 3. i Fig. 5 shows also in side elevation the apparatus according to Figs. 3 and 4 in the position assumed during use.

In the form of construction illustrated in Figs. 1 and 2 the supporting plate 6 is set off directly under the handle and has on the inner side of its lower end adove-tailedtrans verse groove 6.

- The brush is made in sections each. composed of hairs or bristles 9 fixed in a metal socket g having a dove-tailed projection e -on i The individual sections are projectionre is slipped into the'groove In order .to more securely hold the sections on the plate a spring a is fixed on the inner side of the plate and bears on the upper side of the sockets g or their projections 6 Two brackets y arranged one above-the other project from the middle of the inner side of the plate 6 and each plate is provided at its free end with a hole in whicha transverse bar 3 is mounted. Half way between these brackets y a projection w is arranged having a vertical slot w. Two I-shaped elements w each having a hole at each end of their vertical web are slipped one on each end of the bars 3 These elements 00 also have each an intermediate hole half way between the two holes at the endeof their-vertical web, these intermediate holes being provided with a right and left handscrew thread respectively. A transverse spindle h having a right screw thread at one end and a left hand screw thread at the other end engage in the interme diate holes of the I-shaped elements 00, this spindle carrying in its middle a knurled disc h guided in the slot to in the projection. By turning the disc It in one or other direction the spindle h is rotated so that the elements are moved together or apart. The ends of upper and lower horizontal flanges of the elements 00 are slotted and in these slots vertical arms a and a of side plates a are verti cally guided. By moving the elements w together by turning the knurled disc h the plates at are pressed against the side of the outer brush sockets g, which are pushed tightly against one another and firmly clamped. The lower end bears on the bristles g and prevents lateral spreading thereof. The lower end plates a are-extended towards the frontand rear so that they afford a good guide of "the brush on the surface to be painted. The arms a" of the ala'tes are 'longerthan the arms a and have eaci notches If, 5 at the upper end, one on theinner side and the other on the outer side; The arms a extend through a transverse slot 0' in a plate 0 resting on the upper end of the arms a and having a lever f'eX-tending through a vertical slot Z in the suppor'ting'pla'te e. A spring I) is fixed'on the plate 0 and engages in the inner notches b of the arms a The outer edge of the transverse slot 0'' engages in the outer notches of 't'he'arms a when pressure is eX- erted on the lever)".

, In order to exchange the brush sections, the clamping pressure is removed from the sockets by turning the knurled-disc k and'thus-shi'fa ing apart the elements a" carrying the side plates. The upper end of one or both o'f t he arms a. of the side plates canthe'n be released by disengaging the spring 7) from 'thenotch If, whereupon the side plate or plates can be islippedou't' of the slots in its guide element as. The projections of the sockets can then be slipped out of the dove-tailed groove in the supporting plate. After the brush sections have been 'exc'hangedthe side'pl'ates are replaced and screwed'ti'ghtly againstthe sockets 'bvturning the knurled disc inthe oppo site direction. 7

If it is desired to paint aline of a certain width, the brushsections necessary for producing the width of the line are inserted in the supporting plate and the side plates fixed V at the proper height to allow the requisite bend ng-of the bristles. The brush is then brought into the proper position on the surfaceto be painted and pressure applied until thelo'wer end of the side plates bears on this surface, after which it is only necessary to move the brush along the surfacemaintainingthepressure onthe brush so that the side ,plates slide along the wall. The bristles can then 'onlypaint the surface between the "side plates, being limited laterally by the "side ing the apparatus. by hand, the guide plates a arei'turnedibac'k plates. Thus a straight line of uniform width can easily be painted.

Should it be desired to simultaneously paint two or mor lines, one or more of the intermediate sections may be replaced by an inverted T-shaped part on which carries at the free end of its vertical web a socket g with a clove-tailed projection 6 like those of the brush sections. The horizontal flange of this T-shaped part m prevents the spreading of the bristles inwardly, whereas they are prevented from spreading outwardly by the side plates a. Thus several parallel lines can be painted simultaneously.

When the brush is not in use, the bristles can be protected by lowering the sideplates a.

Foradjusting theheight of the side plates the lever f and the plate 0 are pulled in upward direction, the -notch b the arm a preventing the plate 0 from disengaging from the arm a. I

In the form of construction illustrated in Figs. 3 to 5 the like parts are designated The apparatus can be pressed against the wall, as desired, as in passing alongth'e wall the guide plates ayieldin the direction'of the arrow 73 (Fig. 5),.owing to"thejspring1b and, being substantially of I pe,

roll along the wall, but only as 'faras the brush assumes a curved shape, when "being pressed against the surfacebythe hand guid- If the brush is removed by the springs I) intoa position corresponding to that assumed 'bythebrush onibe'ing removed from the wall. The apparatus is so constructed thatlit'can be fitted .to any brush.

'1 claim 1. An apparatus for pain'ting'lines, comprising in combination with the handle :and

the brushpa downwardly extending supporting plate on said handle, two lateral gplates s'hiftable relative "to said supporting iplate arranged one on each side "ofrsaifd "brush adapted to restrict the lateral spreading of the brush and to form a rest during the painting of a line,-and a spring-loaded 'arm-gd'etacha'bly connected to said, lateral plates adapted to regulate the height of said side plates.

2. .An apparatus as 'speci'fiedin claim 1, in

which the lateral ;'plates are 0scillatablymounted on said supporting plate 'and in which the brush is composed "of separate "adapted'to rotate around their own-axisiduri ing the. painting o'f'the" line. i

.3. An: apparatus as specified in ;claim 1,

AUGUST WEBER. 

